They intend to merge operations should this deal move forward but alas the two had been rivals years prior and this comes with a similar lineup of entertainment. In this case, Canal+'s ROK Studios and M-Net's Africa Magic channels as mentioned sometime ago.
Unless some restructuring plan is underway for both these brands it's likely that the ROK channels and Africa Magic would be subjected to a merger. Sort of as a streamlining attempt as seen with Africa Magic Urban as the latter would fold under Showmax and iROKO TV.
Of course, Canal+ did acquire the TV channels and studios and not the iROKO+ streaming service. If anything, Canal+ could reduce their investment on iROKO TV now that they have Africa Magic and opt to license content just to build the offering on IROKO+.
The ROK channels could start to burn out once consumers notice there's less new content and another if some of this offering were to just reappear on Africa Magic Showcase or Africa Magic Family for instance.